142. The Essence of the War

I heard

The essence of the war should be in a place of permission. However, with Mitzva and sin, the loss is near and the reward is far. Hence, there he should observe without any considerations.

However, waging war and keeping the Mitzva of choice should be made in a place of permission, since the act is only a matter of permission. Hence, even if one fails, the sin will not be so great. This is why it is considered near to the reward, since if he wins the war, he will bring a new authority under the Kedusha.